Weight Loss Calculator
Find out how long it will take to reach your body weight goals
This free body weight planner gives you an idea of how long it will take to reach your weight loss goal. Keep in mind weight loss is not as simple as calories in and calories out. And it’s definitely not a straight line – partly because as you eat less, your metabolism slows. Use this tool to estimate how long it will take and how hard you’ll have to work to reach your goals.
Some of the results such as Lean Body Mass require your body fat percentage. You can use the Body Fat Calculator to get an estimate. (This number will be more accurate if you have calipers and/or a measuring tape.)
Disclaimer: This information is for use in adults defined as individuals 18 years of age or older and not by younger people, or pregnant or breastfeeding women. This information is not intended to provide medical advice. A health care provider who has examined you and knows your medical history is the best person to diagnose and treat your health problem. If you have specific health questions, please consult your healthcare provider.
BMI
The World Health Organization divides BMI into the following categories.
| BMI | Category |
|---|---|
| Below 18.5 | Underweight |
| 18.5–24.9 | Normal weight |
| 25.0–29.9 | Overweight |
| 30.0–34.9 | Obesity class I |
| 35.0–39.9 | Obesity class II |
| Above 40 | Obesity class III |